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Texas Instruments ADS8519IDBR
- Part No.:
- ADS8519IDBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADS8519IDBR.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,776
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Product details
Overview
ADS8519IDBR from Texas Instruments is a 16-bit, 250kSPS successive approximation register (SAR) analog-to-digital converter with integrated sample-and-hold, internal 4.096V reference, SPI-compatible serial interface, and 28-pin SSOP package. It supports ±10V, ±5V, and 0V–8.192V input ranges without external precision resistors and delivers 93dB SNR at 20kHz - used in high-accuracy industrial data acquisition systems.
For engineers reviewing the ADS8519IDBR datasheet, ADS8519IDBR pinout, ADS8519IDBR application, or ADS8519IDBR equivalent, key selection considerations include its single 5V analog supply operation, dual-clock mode (internal/external DATACLK), daisy-chain TAG capability, and guaranteed 16-bit no-missing-codes performance across –40°C to +85°C.
Technical Context
The ADS8519IDBR implements a capacitor-based SAR architecture with on-chip CDAC, comparator, and reference buffer. Its conversion cycle (4ms total) splits into 1.8ms acquisition and 2.2ms conversion phases, with aperture delay of 5ns and full-power bandwidth of 500kHz.
It features dual digital interface modes: internal clock mode (9MHz DATACLK output, MSB-first, 16-bit serial) and external clock mode (0.1–26MHz DATACLK input) with optional SYNC pulse generation and TAG-enabled daisy-chaining for multi-channel synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16 bits, guaranteed no missing codes - ensures monotonicity and full dynamic range utilization in precision measurement. |
| Throughput Rate | 250kSPS - enables real-time sampling of signals up to 125kHz Nyquist bandwidth in continuous acquisition. |
| INL / DNL | ±1.5LSB max INL, ±1LSB max DNL - supports high-fidelity waveform capture and calibration-free system accuracy. |
| SNR / SINAD | 93dB SNR, 90dB SINAD at 20kHz - meets requirements for high-resolution sensor interfacing and spectral analysis. |
| Reference | Internal 4.096V ±0.25% (±10V range), 8ppm/°C drift - eliminates external reference component while maintaining stability over temperature. |
| Power Dissipation | 110mW typ at 250kSPS - enables dense channel count in thermally constrained industrial modules. |
| Analog Supply | 5V VANA (4.75–5.25V), with separate 1.65–5.25V I/O supply - allows interoperability with mixed-voltage digital logic. |
Pinout & Package
ADS8519IDBR is housed in a 28-pin SSOP (DB) package with 0.64mm pitch, 10.2mm × 5.3mm body size, and exposed thermal pad (not electrically connected). Pin 1 is marked by a dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R1IN, R2IN, R3IN | Analog input terminals | Support ±10V/±5V/0–8.192V configurations via internal resistor network; ±25V absolute max rating protects against transient overvoltage. |
| REF | Reference I/O | Outputs internal 4.096V reference or accepts external 3.9–4.2V source; requires 2.2µF tantalum bypass to AGND2 for stability. |
| CAP | Reference buffer capacitor terminal | Connects to 2.2µF tantalum capacitor to ground - stabilizes internal reference buffer and reduces noise coupling. |
| CS, R/C | Control inputs | ORed chip select and read/convert control; falling edge initiates conversion and triggers data read in internal clock mode. |
| BUSY | Status output | Active-low open-drain signal indicating conversion in progress; transitions high when result is latched and ready for readout. |
| DATA, DATACLK | Serial interface I/O | MSB-first 16-bit SPI-compatible output; DATACLK is bidirectional - output in internal mode, input in external clock mode. |
| TAG | Daisy-chain input | Enables cascaded readout of multiple ADS8519 devices; level sampled at transmission start appears on DATA after final bit. |
| PWRD | Power-down control | High-level input disables conversions and reduces current to 20mW - supports low-power sleep between acquisition bursts. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reference buffer | Drives 2.2µF CAP capacitor directly - eliminates need for external op-amp buffer and associated layout complexity. |
| Dual clock interface mode | Selectable via EXT/INT pin: internal 9MHz DATACLK (self-timed) or external 0.1–26MHz clock (system-synchronized) - simplifies timing integration with DSP/FPGA hosts. |
| Tag-based daisy-chaining | TAG input propagates through DATA output during serial shift - enables synchronized multi-ADC readout with single DATACLK line and minimal interconnect. |
| Flexible data format | SB/BTC pin selects straight binary or two's complement output - matches host processor arithmetic conventions without software conversion. |
| Industrial temperature range | –40°C to +85°C operation with full 16-bit specification - validated for deployment in factory automation, motor drives, and outdoor instrumentation. |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
Use Scenario: Monitoring pressure, temperature, and flow sensors in PLC-based control cabinets with 4–20mA loop interfaces and isolation barriers. IC Role / Device Role / Timing Role: Primary ADC front-end digitizing conditioned analog sensor outputs at 250kSPS with 16-bit resolution and low latency. Use Value: ±1.5LSB INL and 93dB SNR ensure calibrated accuracy across wide temperature swings without field recalibration. |
Use Scenario: Modular DAQ chassis acquiring synchronized multi-channel waveforms from vibration, acoustic, and strain sensors. IC Role / Device Role / Timing Role: Channelized SAR ADC with TAG daisy-chain support enabling precise inter-channel timing alignment across 8+ channels. Use Value: Internal clock mode provides deterministic 4ms cycle time; external DATACLK + SYNC enables sub-µs inter-device skew control. |
| Digital Signal Processing | Medical Equipment |
Use Scenario: Front-end digitization in portable ultrasound beamformers requiring high dynamic range and low harmonic distortion. IC Role / Device Role / Timing Role: High-SNR ADC feeding FPGA-based digital down-conversion and filtering pipelines. Use Value: 90dB SINAD at 20kHz and 500kHz full-power bandwidth preserve signal fidelity for RF envelope detection and Doppler processing. |
Use Scenario: Patient monitoring systems capturing ECG, EEG, and bioimpedance waveforms with clinical-grade accuracy. IC Role / Device Role / Timing Role: Isolated analog input channel ADC with ±10V range supporting differential sensor topologies and anti-aliasing filter integration. Use Value: Bipolar zero error <±2mV and full-scale error drift <±7ppm/°C maintain diagnostic confidence across operating environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8509IPW | 18-bit resolution, 100kSPS, 28-pin TSSOP, no internal reference - requires external 4.096V ref and buffer. | Higher resolution but lower speed; suited for static precision measurements (e.g., weigh scales) rather than dynamic waveform capture. | Choose ADS8509IPW only if 18-bit resolution outweighs 2.5× throughput penalty and added BOM cost of reference circuitry. |
| AD7606BSTZ | 8-channel simultaneous-sampling 16-bit SAR, 200kSPS/channel, parallel/SPI interface, internal 2.5V ref - no ±10V input support. | Multi-channel integration reduces board space vs. discrete ADS8519IDBR per channel, but lacks bipolar ±10V range and daisy-chain flexibility. | Choose AD7606BSTZ for compact multi-sensor systems where channel count >1 and unipolar 0–5V/0–10V ranges suffice. |
Compared with ADS8519IDBR, ADS8509IPW trades speed for resolution and adds external reference dependency, while AD7606BSTZ offers channel density at the expense of input range flexibility and inter-ADC synchronization granularity.
Availability
ADS8519IDBR is available at Aetrix Electronics and suitable for industrial process control, data acquisition systems, and medical equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS8519IDBR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in precision signal chain solutions.
The ADS8519 belongs to TI's high-accuracy SAR ADC product line, designed specifically for industrial and instrumentation applications demanding 16-bit integrity, robust noise immunity, and seamless integration with DSP/FPGA controllers.
FAQ
What input voltage ranges does the ADS8519IDBR support?
The ADS8519IDBR supports three factory-configured input ranges: ±10V, ±5V, and 0V to 8.192V - all enabled by internal precision resistor networks. No external components are required to configure these ranges. The device maintains specified INL, DNL, and SNR performance across all ranges, with full-scale error drift of ±7ppm/°C when using the internal reference in ±10V mode. This makes ADS8519IDBR suitable for mixed-signal systems interfacing diverse sensor types without hardware reconfiguration.
How does the ADS8519IDBR handle power-down mode?
The ADS8519IDBR enters low-power state when the PWRD pin is driven high, reducing typical power dissipation from 110mW to 20mW. In this mode, conversions are inhibited, but the previous conversion result remains latched in the output shift register for readout. Recovery to full accuracy takes ≤1ms after PWRD returns low, verified with a 1µF capacitor on the CAP pin. This behavior allows ADS8519IDBR to support burst-mode acquisition in battery-powered or thermally constrained industrial nodes.
Can the ADS8519IDBR interface directly with an FPGA using an external clock?
Yes - the ADS8519IDBR supports external DATACLK operation up to 26MHz when EXT/INT is high. In this mode, CS and R/C control read initiation, and DATA shifts out the prior conversion result synchronous to DATACLK edges. The device generates a SYNC pulse on the SYNC pin upon first DATACLK rising edge during read, enabling FPGA-based alignment of multi-ADC data streams. Critical timing parameters (e.g., td8 = 2–13ns data valid after DATACLK high) are fully characterized for FPGA interface design.
What is the role of the TAG pin on the ADS8519IDBR?
The TAG pin on the ADS8519IDBR serves as a daisy-chain input for cascading multiple converters. When EXT/INT is high and external DATACLK is active, the level present on TAG at the start of data transmission is output on the DATA pin after the 16th bit. This allows one master controller to read back status or channel ID from each ADS8519IDBR in a chain using a single DATA line - reducing PCB routing complexity and pin count in multi-channel systems without requiring additional GPIOs per device.
Does the ADS8519IDBR require external decoupling capacitors?
Yes - the ADS8519IDBR requires specific decoupling: a 0.1µF ceramic and 10µF tantalum capacitor between VANA and AGND2, plus a 2.2µF tantalum capacitor between CAP and AGND2. These values are validated in TI's SLAS462D datasheet for stable reference buffering and analog supply filtering. Omitting or substituting these capacitors risks increased INL error (>±3LSB), degraded SNR (≤85dB), and potential conversion lockup under transient load conditions - especially critical in high-EMI industrial environments where ADS8519IDBR is commonly deployed.
ADS8519IDBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 1.65V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8519IDBR FAQ
1.How can I place an order for ADS8519IDBR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8519IDBR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS8519IDBR reliable?
The price and inventory of ADS8519IDBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8519IDBR is usually 5 days.
3.What payment methods are accepted for ADS8519IDBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8519IDBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8519IDBR?
ADS8519IDBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8519IDBR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS8519IDBR?
For technical support, including ADS8519IDBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8519IDBR requirements.
6.How does Aetrix verify that ADS8519IDBR is sourced from the original manufacturer or authorized distributors?
All ADS8519IDBR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS8519IDBR meets industry standards.
7.What is the process for return or replacement of ADS8519IDBR?
All ADS8519IDBR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8519IDBR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS8519IDBR part is unused and in its original packaging.
Return procedure for ADS8519IDBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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